How does one wash a severe impurity, especially dog impurity, according to those who stipulate washing three or seven times? And do the hand and what is used for washing become impure if they become wet with water that has separated from the impure item before the washings are complete? And must they be washed seven times? And does water splashed from the impurity before the seventh wash make the ground or the washing basin impure? And are the hand, what is used for washing, and the impurity considered a single entity in this case? And if a dog defecates on the staircase of a building and it is washed with water only, without using earth or washing seven times, then you step on it with a wet shoe and enter the apartment, does the apartment floor become impure? And if you see wetness that you thought was dog urine on a doormat in front of the door and it has dried, does it remain impure?

It is necessary to complete the seven washes with earth for anything soiled by dog impurity. Each part affected by the impurity is considered a single entity, unless the wash encompasses all of them. If water enters the basin after washing, the hand becomes impure, and it is necessary to wash it seven times, or whatever remains of the seven washes. It is not necessary to directly touch the dog impurity with the hand; it suffices to apply earth and pour water. Regarding a bathroom where a dog was washed: what is certain to have been soiled by impurity is impure, and what is doubtful is pure. The bathroom is purified by water passing over it seven times, one of them with earth. What you doubt does not need to be washed, but what you are certain of, you should wash. The Shafi'is hold that dog impurity on the ground requires washing seven times, one of them with earth. The Hanbalis, however, deem it sufficient to dilute it with water, which is a strong opinion. The ground was purified by washing the urine with water, and the dampness you saw on the mop is pure unless you are certain of its impurity.